Stand-alone sensor for remote measurement of subzero temperatures

Ashok N. Kaul; A. V. Raja Kumar; Om Prakash Nijhawan

doi:10.1117/12.346803

29 April 1999 Stand-alone sensor for remote measurement of subzero temperatures

Ashok N. Kaul, A. V. Raja Kumar, Om Prakash Nijhawan

Proceedings Volume 3729, Selected Papers from International Conference on Optics and Optoelectronics '98; (1999) https://doi.org/10.1117/12.346803
Event: Selected Papers from the International Conference on Optics and Optoelectronics, 1998, Dehradun, India

Abstract

The present paper describes the design, fabrication and calibration of a stand alone IR sensor which can remotely sense the radiations emitted by the snow surface. The sensor is capable of measuring temperatures from 0 degree(s)C to -30 degree(s)C. The sensor essentially comprises of three major constituents: (1) the IR optics which collects the radiation emitted by the snow surface and focuses them onto the detector, (2) the detector that converts IR radiation into an electrical signal and finally, (3) the electronics module and display that processes and displays the measured snow surface temperature. The sensor design is based on a single element lithium tantalate pyroelectric detector and uses a DLC coated Ge optics operating at F/1, with an effective aperture of 57.3 mm. The output of the sensor gives the instantaneously measured snow surface temperature with an accuracy of +/- 1 degree(s)C.

Citation Download Citation

Ashok N. Kaul, A. V. Raja Kumar, and Om Prakash Nijhawan "Stand-alone sensor for remote measurement of subzero temperatures", Proc. SPIE 3729, Selected Papers from International Conference on Optics and Optoelectronics '98, (29 April 1999); https://doi.org/10.1117/12.346803

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available